Update README.md #181

Job	Run time
pre-check	3m 19s
bundle-commands	3m 45s
build-delta-manifests	3m 50s
build-all-delta-packs	4m 19s
build-multiple-delta-packs	4m 19s
clean-rebuild	3m 45s
config-conversion	3m 12s
content-chroot	3m 26s
contentsize-check	3m 41s
create-mix-with-blended-content	5m 47s
update-mix-add-remove-bundles	11m 38s
clr-installer-config	3m 7s
create-mix-with-custom-content	4m 6s
customize-os-release	4m 36s
export-flag	4m 21s
manual-format-bump-flow	4m 6s
manual-upstream-format-bump-flow	3m 51s
no-delta-manifests-over-format-bump	3m 53s
no-delta-packs-over-format-bump	3m 59s
no-state-variables-in-full	3m 29s
state-conversion	3m 29s
test-format-bump	4m 16s
update-mixver-offline	3m 47s
upstream-format-bump	3m 53s
	1h 41m 54s

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